They've developed a nice proof on the "bounds" of how quickly a quantum system can evolve. I think the quote by the coauthor summarizes it best: "'How fast can

They've developed a nice proof on the "bounds" of how quickly a quantum system can evolve. I think the quote by the coauthor summarizes it best: "'How fast can a quantum system evolve in time?' Establishing general and tight quantum speed limits is crucial to assess how fast quantum technologies can ultimately be, and can accordingly guide in the design of more efficient protocols operating at or close to the ultimate bounds." This is a theoretical quantum physics paper... even experimental quantum physicists struggle to understand what they mean most of the time. So don't expect to much clarity from the paper, but if you want to look here it is: http://journals.aps.org/prx/pdf/10.1103/PhysRevX.6.021031 http://journals.aps.org/prx/pdf/10.1103/PhysRevX.6.021031